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Responsive structural colors from artificially engineered micro/nanostructures are critical to the development of anti‐counterfeiting, optical encryption, and intelligent display. Herein, the responsive structural color of hydrogel micropillar array is demonstrated under the external stimulus of ethanol vapor. Micropillar arrays with full color are fabricated via femtosecond laser direct writing by...
Structurally colored materials, which rely on the interaction between visible light and nanostructures, produce brilliant color displays through fine control of light interference, diffraction, scattering, or absorption. Rationally combining different color‐selective functions into a single form offers a powerful strategy to create programmable optical functions which are otherwise difficult, if not...
Lung‐on‐a‐chip models hold great promise for disease modeling and drug screening. Herein, inspired by the iridescence phenomenon of soap bubbles, a novel biomimetic 3D microphysiological lung‐on‐a‐chip system with breathing visualization is presented. The system, with an array of pulmonary alveoli at the physiological scale, is constructed and coated with structural color materials. Cyclic deformation...
Structural coloration is an intriguing phenomenon that exists widely in living creatures. A genuine bionic design of artificial structural colors requires accommodating of molecular interactions that contribute to dynamic optical responses over various external stimuli. Novel composite cellulose cholesteric liquid crystals are reported with additional molecular interactions and dynamic regulations...